User Manual

Table Of Contents
Upstream key luma/linear key parameters:
Mask Enables a rectangular mask that can then be adjusted using the top, bottom, left
and right parameters.
Pre-Mult Identifies the key signal as a pre-multiplied key.
Clip The clip level adjusts the threshold at which the key cuts its hole. Decreasing the
clip level reveals more of the background. If the background video is completely
black then the clip value is too low.
Gain The gain adjustment electronically modifies the angle between on and off thereby
softening the edges of the key. Adjust the gain value until the edge softness is
desirable but the background video luminance or brightness is not affected.
Invert Key Inverts the key signal.
Flying Key Enables/disables DVE effects.
Setting up a Luma/Linear Key on the Upstream Keyer using
ATEM 1 M/E Advanced Panel
1 Press the ‘key 1’ button to enable the keyer on the preview output. This
automatically selects the keyers menu on the system control LCD, but you can
also press the ‘keyers’ button to enter the menu directly.
2 Select the desired M/E keyer by pressing the corresponding soft button along the
top edge of the LCD menu.
3 Use the control knob underneath the ‘key type’ indicator to choose the ‘luma’ key.
4 Rotate the ‘fill source’ and ‘key source’ control knobs to choose a fill and key
source. You can also press the corresponding buttons on the source select bus to
select the fill and key source.
5 Once you have chosen a key type, fill and source, press the ‘right’ arrow button
to scroll through to the next menu item and use the control knobs to adjust key
parameters such as mask, gain, clip, enable or disable pre multiplied key, etc.
To set up a luma key on downstream keyer 1 on ATEM SDI Extreme ISO models:
1 Select the DSK1 button in the select bus.
2 Select the fill and key source from the select bus
3 Adjust the key parameters to refine the key in ATEM Software Control.
To set up a luma/linear key on downstream keyer in ATEM Software Control:
1 Select the downstream key 1 palette.
2 Use the menu controls labeled fill source and key source to specify the fill and key
sources. If performing a luma key, select the same source for both fill and key.
3 Adjust the key parameters to refine the key.
110Keying using ATEM SDI